Capture, analysis and use of building data from mobile devices

ABSTRACT

Techniques are described for automated operations involving capturing and analyzing information from an interior of a house, building or other structure, for use in generating and providing a representation of that interior. Such techniques may include using a user&#39;s mobile device to capture visual data from multiple viewing locations (e.g., video captured while the mobile device is rotated for some or all of a full 360 degree rotation at each viewing location) within multiple rooms, capturing data linking the multiple viewing locations, analyzing each viewing location&#39;s visual data to create a panorama image from that viewing location, analyzing the linking data to determine relative positions/directions between at least some viewing locations, creating inter-panorama links in the panoramas to each of one or more other panoramas based on such determined positions/directions, and providing information to display multiple linked panorama images to represent the interior.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of co-pending U.S. patent applicationSer. No. 15/649,427, filed Jul. 13, 2017 and entitled “Capture And UseOf Building Interior Data From Mobile Devices”, which is herebyincorporated by reference in its entirety.

TECHNICAL FIELD

The following disclosure relates generally to techniques for theacquisition and analysis of information from an interior of a buildingin order to generate and provide a representation of that interior, suchas to capture video data from a mobile device that represents a house'sinterior at multiple viewing locations for use along with other datafrom the mobile device in generating and presenting linked panoramaimages of various locations within the house.

BACKGROUND

In various fields and circumstances, such as real estate acquisition anddevelopment, property inspection, architectural analysis, generalcontracting, improvement cost estimation and other circumstances, it maybe desirable to view the interior of a house, office, or other buildingwithout having to physically travel to and enter the building. Whiletraditional still photographs of a building's interior may provide someunderstanding of that interior, it is difficult to fully understand thelayout and other details of the interior from such photographs. However,it can be difficult or impossible to accurately and efficiently capturemore immersive types of visual information for building interiors,without spending significant time and using specialized equipment.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram depicting an exemplary building interiorenvironment and mobile computing system in accordance with an embodimentof the present disclosure.

FIG. 2 is a schematic diagram of an additional exemplary buildinginterior environment and computing systems in accordance with anembodiment of the present disclosure.

FIG. 3 is a block diagram illustrating a computing system suitable forexecuting an embodiment of a system that performs at least some of thetechniques described in the present disclosure.

FIG. 4 depicts a process flow for a Building Interior Capture andAnalysis routine in accordance with an embodiment of the presentdisclosure.

FIG. 5 depicts a process flow for a building interior data acquisitionroutine in accordance with an embodiment of the present disclosure.

FIG. 6 depicts a process flow for a building interior representationpresentation routine in accordance with an embodiment of the presentdisclosure.

DETAILED DESCRIPTION

The present disclosure relates generally to techniques for one or moredevices to perform automated operations involved in acquiring andanalyzing information from an interior of a house, building or otherstructure, for use in generating and providing a representation of thatinterior. For example, in at least some such embodiments, suchtechniques may include using one or more mobile devices (e.g., a smartphone held by a user, a camera held by or mounted on a user or theuser's clothing, etc.) to capture video data from a sequence of multipleviewing locations (e.g., a video captured at each viewing location whilea mobile device is rotated for some or all of a full 360 degree rotationat that viewing location) within multiple rooms of a house (or otherbuilding), and to further capture data linking the multiple viewinglocations. The capturing of the data linking two successive viewinglocations in the sequence may include, for example, capturing movementdata (e.g., acceleration and other data from an IMU, or inertialmeasurement unit, of a mobile device) as a user with the mobile devicewalks or otherwise moves between the two viewing locations, as well asoptionally recording video or other visual data for at least some of theuser movement. After the viewing location videos and linking data arecaptured, the techniques may include analyzing video captured at eachviewing location to create a panorama image from that viewing locationthat has visual data in multiple directions (e.g., a 360 degree panoramaimage around a vertical axis), analyzing the linking data to determinerelative positions/directions between each of two or more viewinglocations, creating inter-panorama positional/directional links in thepanoramas to each of one or more other panoramas based on suchdetermined positions/directions, and then providing information todisplay or otherwise present multiple linked panorama images for thevarious viewing locations within the house. Some or all of thetechniques described herein may be performed via automated operations ofan embodiment of a Building Interior Capture and Analysis (“BICA”)system, as discussed in greater detail below.

Thus, in at least some embodiments, one or more processor-basedcomputing systems are used to capture and generate information regardinga building interior based on recorded visual information (e.g., video,photographic images, etc.) and/or sensor data captured by a mobiledevice at each of multiple viewing locations within the buildinginterior, as well as based on sensor data (and possibly additionalrecorded visual information) captured during movement of the mobiledevice between such arbitrary viewing locations. As used herein, agenerated “panorama image” refers to any visual representation that isbased on, includes or is separable into multiple discrete componentimages originating from a substantially similar physical location indifferent directions and that depicts a larger field of view than any ofthe discrete component images depict individually, including images witha sufficiently wide-angle view from a physical location to includeangles beyond that perceivable from a person's gaze in a singledirection. As used herein, the term “building” refers to any partiallyor fully enclosed structure, typically but not necessarily encompassingone or more rooms that visually or otherwise divide the interior spaceof the structure—non-limiting examples of such buildings include houses,apartment buildings or individual apartments therein, condominiums,office buildings, commercial buildings or other wholesale and retailstructures (e.g., shopping malls and department stores), etc. The term“acquire” or “capture” as used herein with reference to a buildinginterior, viewing location, or other location (unless context clearlyindicates otherwise) may refer to any recording, storage, or logging ofmedia, sensor data, and/or other information related to spatial and/orvisual characteristics of the building interior or subsets thereof, suchas by a recording device or by another device that receives informationfrom the recording device. The term “sequence” of viewing locations, asused herein, refers generally to two or more viewing locations that areeach visited at least once in a corresponding order, whether or notother non-viewing locations are visited between them, and whether or notthe visits to the viewing locations occur during a single continuousperiod of time or at multiple different time periods.

For illustrative purposes, some embodiments are described below in whichspecific types of information are acquired and used in specific types ofways for specific types of structures and by using specific types ofdevices. However, it will be understood that such described techniquesmay be used in other manners in other embodiments, and that theinvention is thus not limited to the exemplary details provided. As onenon-exclusive example, various of the embodiments discussed hereininclude a mobile device being carried by a user while the mobile devicecaptures various types of data, but in other embodiments one or moresuch mobile devices may move within some or all of a building interiorin other manners, such as if carried by or integrated in an aerial orground-based drone, robot or other autonomous, semi-autonomous and/orremotely controlled device with motion capabilities. As anothernon-exclusive example, while some illustrated embodiments include thelinked panorama images representing or covering a single house or otherstructure, in other embodiments the linked panoramas may extend beyond asingle such house or other structure, such as to include links to andpanorama images of (or other visual representations of) an exteriorenvironment associated with the structure (e.g., yard; pool; separategarages, sheds, barns, pool houses, boat houses, guest quarters or otheroutbuildings; etc.), of one or more other nearby houses or otherstructures (e.g., on a same city block), of nearby streets, roads and/orother areas, etc., as well as to include apartment buildings, officebuildings, condominiums and other multi-tenant buildings or structures.As yet another non-exclusive example, while some illustrated embodimentsinclude linking and presenting multiple panorama images, otherembodiments may include linking and/or presenting other types ofinformation (whether in addition to or instead of such panorama images),such as videos or other visual information from each of multiple viewinglocations that are in forms other than panorama images, informationbased on infrared and/or ultraviolet and/or other non-visible light orenergy (e.g., radiation levels; electromagnetic field, or EMF, levels;etc.), audio information from the environment surrounding a viewinglocation and/or from other sources (e.g., a recording user's annotationsor other verbal descriptions), etc. As yet another non-exclusiveexample, while some illustrated embodiments include linked panoramas orother generated representation of a building interior (and/or othercaptured targets) on a display of client device to an end user, visualand/or audio and/or other information (e.g., haptic information) may bepresented or otherwise provided to end users in other manners, such aspart of an augmented reality (“AR”) system (e.g., via specializedglasses or other head-mounted display) and/or a virtual reality (“VR”)system (e.g., via specialized headgear and/or other output devices). Inaddition, various details are provided in the drawings and text forexemplary purposes, but are not intended to limit the scope of theinvention. For example, sizes and relative positions of elements in thedrawings are not necessarily drawn to scale, with some details omittedand/or provided with greater prominence (e.g., via size and positioning)to enhance legibility and/or clarity. Furthermore, identical referencenumbers may be used in the drawings to identify similar elements oracts.

FIG. 1 depicts a block diagram of an exemplary building interiorenvironment and mobile computing system in accordance with an embodimentof the present disclosure. In particular, FIG. 1 includes a building 199with an interior to be captured by a user mobile computing system 105(also referred to as a “mobile device” for this example) as it is movedthrough the building interior to a sequence of multiple viewinglocations 110 by a user (not shown) via a travel path 115. A BuildingInterior Capture & Analysis (“BICA”) system may automatically perform orassist in the capturing of the data representing the building interior,as well as further analyze the captured data to generate a visualrepresentation of the building interior, as discussed further herein—inthis example, the BICA system is executing as a local application 155 onthe mobile device 105, although in other embodiments it may execute inpart or in whole on one or more other computing systems (not shown) thatare remote from the building 199, as discussed in greater detail withrespect to FIG. 2.

In the depicted embodiment, the mobile device 105 includes one or morehardware processors 130; one or more imaging systems 135, which includephotographic and video recording capabilities (optionally with one ormore specialized lenses and/or additional associated equipment, asdiscussed elsewhere herein); a display system 140, which includes a maindisplay screen having a plurality of graphical display elements, and mayfurther include other components of the mobile device (such as one ormore light-emitting elements aside from the main display screen); acontrol system 145, such as to include an operating system, graphicaluser interface (“GUI”), etc.; and one or more sensor modules 148, whichin the depicted embodiment include a gyroscope module 148 a, anaccelerometer module 148 b, and a compass module 148 c (e.g., as part ofone or more IMU units of the mobile device). In other embodiments, thesensor modules 148 may include additional sensors, such as an altimetermodule, barometric module, light detection module, one or moremicrophones, etc., and other output modules (e.g., one or more speakersor audio output ports) may be provided. In at least some embodiments,the display system 140 may include a touchscreen component of thecontrol system 145, such that at least some operations of the mobiledevice may be controlled by physical user interaction with elements of agraphical user interface presented via the display system. The mobiledevice as depicted further includes a memory 150, which in theillustrated embodiment is executing the BICA application 155, and mayoptionally also be executing a browser application 160, although inother embodiments the device that captures the video and/or other sensordata for the building interior may transfer the captured data to one ormore other devices (not shown) executing a copy of the BICA applicationfor analysis. In one or more embodiments, additional components orapplications may also be executing within the memory 150 of the mobiledevice.

In operation, a user associated with the mobile device 105 enters thebuilding interior 199 via travel path 114, arriving with the mobiledevice at a first viewing location 110A within a first room of thebuilding interior. In response to one or more interactions of the userwith the control system 145 of the mobile device, the BICA applicationinitiates recording a first video of the building interior, capturing aview of the building interior from first viewing location 110A (e.g.,some or all of the first room, and optionally small portions of one ormore other adjacent or nearby rooms, such as through doors, halls orother connections from the first room) as the mobile device is rotatedaround a vertical axis at the first viewing location (e.g., with theuser turning his or her body in a circle while holding the mobile devicestationary relative to the user's body). In addition to recording video,the BICA application may monitor, and/or initiate concurrent recordingof, various data provided by the sensor modules 148. For example, theBICA application may monitor a rotational speed of the mobile device viadata provided by the gyroscopic module and/or accelerometer module; mayassociate with the recorded video a heading reported by the compassmodule at the time the video recording is initiated; etc. In certainembodiments, the BICA application may analyze one or more video framescaptured during the recording process to determine and/or automaticallycorrect issues regarding the recorded video, such as to correct orcompensate for an undesirable level of exposure, focus, motion blur,noise level, or other issue. Furthermore, in certain scenarios andembodiments, a viewing location may be captured in other manners,including to capture multiple still photographs from differentperspectives and angles at the viewing location rather than recordingvideo data at the viewing location.

In certain embodiments, the BICA application may provide real-timefeedback to the user of the mobile device via one or more guidance cuesduring the recording of the first video of the building interior, suchas to provide guidance for improving or optimizing movement of themobile device during the recording process. For example, the BICAapplication may determine (such as based on sensor data provided bysensor modules 148) that the mobile device is rotating too quickly torecord high quality video from the first viewing location, and if so mayprovide an auditory, visual, or other appropriate notification toindicate that the user should rotate the mobile device more slowlyduring the recording process. As another example, the BICA applicationmay determine that the mobile device is shaking or otherwise failing toprovide high quality video (such as based on sensor data or one or moreanalyses of particular captured video frames), and if so may provide anotification to advise the user of the problem. As still anotherexample, in certain embodiments the BICA application may provide anotification to the user if it is determined that a particular viewinglocation is unsuitable for capturing information about the buildinginterior, such as if the BICA application detects that lightingconditions or other environmental factors for the present viewinglocation are negatively affecting the recording process. In certainscenarios and embodiments, the BICA application may re-initiate therecording process once one or more conditions interfering withhigh-quality recording have been alleviated.

Furthermore, in certain embodiments the BICA application may prompt auser for information regarding one or more of the viewing locationsbeing captured, such as to provide a textual or auditory identifier tobe associated with a viewing location (e.g., “Living Room,” “Office,”“Bedroom 1” or other identifier), or to otherwise capture descriptiveinformation from the user about the room (e.g., a description ofbuilt-in features, a history of remodels, information about particularattributes of the interior space being recorded, etc.). In at least oneembodiment, such identifiers and/or other descriptive information may belater incorporated in or otherwise utilized with the capturedinformation for a viewing location, such as to provide a textual orauditory indication of the identifier or other descriptive informationduring subsequent display or other presentation of the building interiorby the BICA application or system (or by another system that receivescorresponding information from the BICA application).

In one or more embodiments, the BICA application may further determineto modify one or more parameters of the imaging system 135 as part ofimproving quality of or otherwise improving some or all video recordedduring capture of a building interior. For example, in certain scenariosthe BICA application may automatically determine to use one or more ofvarious exposure, aperture, and focus parameters; and may automaticallyadjust one or more parameters based on a type of lens or lenses used bythe imaging system, such as if the imaging system includes multiplelenses of different focal lengths or to compensate for an atypical lenstype (e.g., “fisheye,” wide-angle, or telephoto lenses). The BICAapplication may also optionally initiate display of one or more GUIelements to suggest parameters of the imaging system for modification tothe user in order to improve video recording quality in a particularembodiment or situation (e.g., if the BICA application is unable toautomatically modify such parameters). In addition, in some embodiments,the capture of some or all of the video at one or more viewing locationsmay use additional equipment to assist in the capture, such as one ormore of a tripod, additional lighting, a 3D laser scanner andrangefinder (e.g., using LIDAR) or other depth finder, one or moreadditional and/or external lenses, an external camera (e.g., a 360°camera), an infrared emitter and/or detector, an ultraviolet emitterand/or detector, one or more external microphones, etc.

In various circumstances and embodiments, the BICA application maydetermine that multiple rotations of the mobile device at a viewinglocation are desirable to adequately capture information there. Asnon-limiting examples, the BICA application may determine to recordvideo having a greater dynamic range, such as by initiating multiplerotations of the mobile device at different exposure values; or tocapture a greater vertical arc of the building interior, such as byinitiating multiple rotations of the multiple device with distinctz-angles (e.g., one rotation in a lateral direction that isapproximately perpendicular to the vertical axis; another rotation inwhich the vertical angle of the device is raised above thatperpendicular direction, such as to include at least some of theceiling; another rotation in which the vertical angle of the device islowered below that perpendicular direction, such as to include at leastsome of the floor; etc.). In such circumstances, the BICA applicationmay provide one or more notifications or instructions to the user of themobile device in order to indicate the desirability of such multiplerotations.

In at least some embodiments, at a time after initiating the recordingof the first video of the building interior in the first room, the BICAapplication may automatically determine that the first viewing location110A has been adequately captured, such as by determining that a fullrotation of the mobile device has been completed, or that sufficientdata is otherwise acquired. For example, the BICA application maydetermine that the reported heading of the mobile device has returned toor passed a heading associated with the beginning of the videorecording, that the mobile device has rotated a full 360° since videorecording was initiated, that the user has stopped rotation for adefined period of time (e.g., a small number of seconds, such as afterbeing prompted by the BICA application to stop the rotation for thatamount of time when the rotation is complete), etc. In at least someembodiments, the BICA application may provide one or more guidance cuesto the user of the mobile device to indicate that a capture of thebuilding interior from the first viewing location 110A is completed andthat the user may proceed to additional viewing locations within thebuilding interior. It will be appreciated that in certain scenarios,capture of a particular viewing location may not require a full 360°rotation of the mobile device in order to be adequately completed. Forexample, viewing locations in close proximity to walls or corners may beadequately represented by only a partial such rotation of the mobiledevice. Furthermore, in certain scenarios and embodiments, a BICAapplication or system may create a panorama image for a particularviewing location without the mobile device 105 completing a fullrotation while recording video from that viewing location. In suchscenarios, the BICA application or system may compensate for the partialrotation in various manners, including but not limited to: limiting anumber of component images to include in the panorama image if adisparate quantity of video information is recorded from the viewinglocation for other portions of the building interior; generating one ormore interpolated component images that do not wholly correspond to asingle video frame recorded from the viewing location; or other manner,and with the resulting panorama image optionally being less than 360degrees.

Continuing the example of FIG. 1, once the first viewing location 110Ahas been captured in the first room, the mobile device 105 moves alongtravel path 115 as the user carries it to a next viewing location 110B,which in this example is in a different second room through 2 doors andan intervening hallway. As the mobile device is moved between viewinglocations, the BICA application captures linking information thatincludes acceleration data associated with the movement of the mobiledevice, such as that received from accelerometer module 148 b, and incertain embodiments may capture additional information received fromother of the sensor modules 148, including to capture video or othervisual data along at least some of the travel path in some embodimentsand situations. In various embodiments, and depending upon specificconfiguration parameters of sensor modules 148, disparate quantities ofacceleration data may be collected corresponding to movement of themobile device along travel path 115. For example, in certain scenariosacceleration data and other sensor data may be received from the sensormodules at regular periodic intervals (e.g., 1000 data points a second,100 data points a second, 10 data points a second, 1 data point asecond, etc.), while other scenarios and/or sensor modules may result insuch sensor data being received irregularly, or at varying periodicintervals. In this manner, the BICA application may receive greater orlesser quantities of acceleration data during travel of the mobiledevice between viewing locations depending on the capabilities andconfiguration of the particular sensor modules 148 included within theparticular mobile device 105.

In one or more embodiments, the BICA application may further determineto terminate video recording for a viewing location in various manners(such as based on automatic detection of movement away from the viewinglocation, on one or more defined user preferences, on an explicit userrequest, on a full rotation of the mobile device or period ofnon-movement or other determination that the viewing location isadequately captured, etc. In other scenarios, the BICA application maycontinue video recording without termination between capturing video ofa viewing location and subsequent movement of the mobile device alongtravel path 115—in such embodiments, the BICA application may associatewith the captured video (either at the time of recording or during lateranalysis of such captured video, described elsewhere herein) one or moreindications of demarcation (“markers” or “separation points”)corresponding to a detected change between receiving sensor dataindicative of rotation around a vertical axis (typically associated withcapturing of a viewing location) and receiving sensor data indicative oflateral or vertical movement typically associated with movement betweensuch viewing locations), optionally after a defined period ofsubstantially no movement. The BICA application may further determine tomaintain video recording until receiving an indication that all captureof a building interior has been completed (such as completion of videorecording for a final viewing location within the building interior). Itwill be appreciated that during the course of multiple segments ofmovement through a building interior at and between multiple viewinglocations, the BICA application may determine to maintain and utilizecontinuous video recording during all segments of such movement, one ormore individual/contiguous segments of such movement, or no segments ofsuch movement at all. In at least some embodiments, such determinationmay be based on one or more of defined user preferences, configurationparameters, available resources (such as storage capacity or otherresources) of the mobile device 105, a quantity or type(s) of sensordata captured during such movement, or other factors.

In addition, and in a manner similar to the guidance cues and otherinstructions provided during capture of viewing location 110A, the BICAapplication may in certain embodiments provide guidance cues and otherinstructions to a user during movement of the mobile device betweenviewing locations. For example, in certain embodiments the BICAapplication may notify the user if such movement has exceeded a definedor suggested distance from the previous viewing location, or if the useris attempting to capture a next viewing location that is determined bythe BICA application to be too close to the previous viewing location,or if the user is engaging in too much movement of a particular type(e.g., sideways rather than forward). Furthermore, in an manneranalogous to video recording for a viewing location, the BICAapplication may determine to terminate video recording for a travel pathbetween viewing locations in various manners (such as based on a periodof non-movement at the end of the travel path or other determinationthat the travel path is adequately captured, on an explicit userrequest, on one or more defined user preferences, etc.).

Continuing the illustrated example of FIG. 1, once the mobile device hasarrived at the next viewing location 110B, the BICA application maydetermine to begin capture of the viewing location. If video iscurrently being recorded, the BICA application may associate with thecaptured video (either at the time of recording or during later analysisof such captured video) one or more markers corresponding to recordingof a new viewing location (e.g., based on a determined period ofnon-movement after the movement to the new viewing location iscompleted; on a detected change in receiving sensor data indicative oflateral or vertical movement between viewing locations and receivingsensor data indicative of rotation around a vertical axis; etc.). Ifvideo is not currently being recorded, the BICA application may incertain embodiments automatically initiate such video recording upondetection that the user has begun to rotate the mobile device, inresponse to a user request to begin capturing the next viewing location(such as via one or more interactions of the user with the BICAapplication and/or imaging system 135 via the control system 145), or inother manners as previously noted.

In a manner similar to that described with respect to viewing location110A, the BICA application captures viewing location 110B by recordingvideo during rotation of the mobile device around a vertical axis atviewing location 110B, optionally modifying imaging system parametersand providing guidance cues or other instructions to the user of themobile device in order to improve the recorded video associated with theviewing location. Upon determination that the viewing location 110B hasbeen adequately captured (either automatically or in response to a userrequest as described above with respect to the capture of viewinglocation 110A), in certain embodiments the BICA application may receivea user request to terminate or to continue capture of the buildinginterior, such as via one or more user interactions with a graphicaluser interface provided by the BICA application or in some other manner(e.g., user interaction with elements of control system 145). Forexample, in accordance with one or more embodiments and/or defined userpreferences, the BICA application may determine to continue capture ofthe building interior unless a user request indicating otherwise isreceived; in other embodiments or in accordance with other defined userpreferences, the BICA application may automatically terminate capture ofthe building interior unless and until user interaction is receivedindicating that one or more additional viewing locations (and linkinginformation during movement to such additional viewing locations) is tobe captured.

In the depicted embodiment of FIG. 1, additional viewing locations110C-110L, as well as linking information gathered during movementbetween such viewing locations, are captured by the BICA application asthe user moves the mobile device 105 through building 199 interior alongtravel paths 115. Upon conclusion of capturing recorded videocorresponding to rotation around a vertical axis located at a lastviewing location 110L in the sequence, the BICA application determinesto terminate (such as in response to a user request) the capture of thebuilding interior. While the sequence of viewing locations andassociated travel path do not include any overlap in this example (e.g.,with one portion of the travel path crossing another portion of thetravel path; one viewing location being the same as or overlapping withanother viewing location, such as to have a loop in which the lastviewing location is the same as the first viewing location or otherviewing location; etc.), other embodiments and situations may includeone or more such overlaps. Similarly, while the sequence of viewinglocations are traveled in a continuous manner in this example, otherembodiments and situations may include a non-contiguous path—as onenon-limiting example, the user in FIG. 1 could stop after travellingfrom viewing locations 100A-110F, and complete the sequence by resumingat viewing location 110L and returning back to viewing location 110Falong the intervening portion of the travel path 115 (resulting in adifferent order of viewing locations for the sequence than the one shownin FIG. 1), whether substantially immediately or after an interveningperiod of time has passed.

In at least some embodiments, either immediately upon terminating thecapture of building interior or at a later time, a panorama image isgenerated for each of viewing locations 110A-101L based on one or moreanalyses of the respective video recording corresponding to each suchviewing location. Various operations may be performed on individualframes of such a video recording as part of generating a correspondingpanorama image. Non-limiting examples of such operations includesharpening, exposure modification, cropping, integration of multipleexposures (such as if multiple rotations using distinct exposureparameters were used in order to expand a dynamic range of the recordedvideo), deblurring (such as to compensate for detected motion blur), andselective discarding of particular video frames (such as based on adetermination that such frames are out of focus, over- or under-exposed,duplicative of other video frames, or on other criteria). Once theindividual frames of the video recording have been selected and modifiedin accordance with the operations described above, the resulting imagesare stored by the BICA system as a single panorama image, such as toinclude multiple navigable component images.

In addition to generating panorama images corresponding to each of theviewing locations within the building interior, analysis of the linkinginformation corresponding to each segment of travel path 115 isperformed in order to determine relative positional information betweenat least successive pairs of viewing locations along that travel path.In particular, acceleration data corresponding to each such segment isanalyzed to determine, for example, a relative location of viewinglocation 110B with respect to previous viewing location 110A (and viceversa), with viewing locations 110A and 110B being a first pair ofsuccessive viewing locations; a relative location of viewing location110C with respect to previous viewing location 110B (and vice versa),with viewing locations 110B and 110C being a second pair of successiveviewing locations; and so on. In at least some embodiments, additionalsensor data may be considered during such analysis. For example, forbuilding interiors encompassing multiple floors or other elevations, inaddition to analyzing vertical acceleration data to determine a relativevertical distance between viewing locations, the BICA system mayadditionally make such determination based on available altimeter data,barometric data, gyroscopic data, etc. In addition, recorded videocaptured as part of the linking information or as part of capturing aparticular viewing location may be analyzed as part of determining therelative positional information. For example, in certain embodimentsindividual video frames within separate segments of recorded video,corresponding to video recorded from separate viewing locations, may beanalyzed to determine similarities between such video frames—forexample, one or more video frames recorded as part of capturing viewinglocation 110E may be compared with one or more additional video framesrecorded as part of capturing viewing location 110F as part ofdetermining relative positional information regarding those viewinglocations. It will be appreciated that while analysis of the linkinginformation may only directly result in relative positional informationbetween successive viewing locations along travel path 115 (e.g.,between viewing locations 110D and 110E, or viewing locations 110G and110H), a full analysis of such linking information may in certainembodiments indirectly result in the BICA system determining relativepositional information between additional viewing locations as well(e.g., between viewing locations 1101 and 110G, or viewing locations110B and 110L).

In one or more embodiments, generating a panorama image for a viewinglocation may include determining one or more component images to use asprimary component images of the panorama image, such as to initiallydisplay when the panorama image is first presented to a user. Variouscriteria may be utilized by the BICA system when determining primarycomponent images for a generated panorama image, including asnon-limiting examples: a component image that includes a view of aquantity of other viewing locations within the building interior; acomponent image determined to be of higher quality than other componentimages within the generated panorama image (such as based on a depth offield, exposure, lighting quality, or other attribute); etc.—thus,selection of a primary component image may be unrelated to the sequenceof video frames originally recorded from the viewing locationcorresponding to the generated panorama image. In certain scenarios andembodiments, multiple primary component images may be selected whengenerating a panorama image, such as to reflect a respective directionfrom which a viewer might arrive at the corresponding viewing locationfrom other viewing locations within the building interior. Withreference to FIG. 1, for example, the BICA system may determine toselect a first primary component image of the panorama image for viewinglocation 110E that corresponds to the perspective of a viewer arrivingfrom viewing locations 110A or 110D (i.e., an image based on videorecorded while the mobile device 105 was facing approximately away fromviewing location 110D), and may determine to select a second primarycomponent image of the 110E panorama image that corresponds to theperspective of a viewer arriving from viewing location 110F (i.e., animage based on video recorded while the mobile device 105 was facingapproximately toward the wall of the room in the direction of viewinglocation 1101).

In the depicted embodiment of FIG. 1, the generation of the panoramaimages and determination of relative positional information is performedlocally by the one or more processors 130 via BICA application 155executing in memory 150 of the mobile device 105. In variousembodiments, some or all of such processing may be handled by one ormore remote server computing systems executing an embodiment of aBuilding Interior Capture and Analysis system, as discussed in greaterdetail with respect to FIG. 2 below.

FIG. 2 is a schematic diagram of an additional exemplary buildinginterior environment being captured via embodiments of a BICA system. Inparticular, in the depicted embodiment of FIG. 2, a mobile device 205(optionally executing an embodiment of a BICA client application) isutilized to capture each of multiple viewing locations 210A-210H withinthe interior of building 299, as well as to capture associated linkinginformation during movement of the mobile device 205 between suchviewing locations. In addition, the depicted embodiment of FIG. 2further includes a remote BICA server system 260 and associated storage280, details and operations of which are further described below.

In a manner similar to that described with respect to building 199 ofFIG. 1, during capture of the interior of building 299, the BICAapplication (e.g., a local client application executing on mobile device205, the remote BICA system 260 via communication over the network(s)201, etc.) provides guidance cues and manages video recording while auser of the mobile device rotates the mobile device around a verticalaxis at each of a sequence of viewing locations 210A-210H. Furthermore,and also in a manner similar to that described with respect to building199 of FIG. 1, the BICA application captures linking information duringmovement of the mobile device between the viewing locations 210 alongtravel path 215. In the depicted embodiment of FIG. 2, the capturedlinking information includes sensor data provided by sensor modules ofthe mobile device (including acceleration data) and further includesadditional video recording captured during such movement.

Following the capture of a last viewing location 210H in the sequence,the BICA application receives an indication from the user that captureof the building 299 interior is complete. In the depicted embodiment ofFIG. 2, the captured information regarding building 299 is transferredfor processing to the remote BICA system 260 via one or more computernetworks 201 (e.g., as initiated by a local BICA client application, ifany, on the mobile device; as initiated by a user of the mobile device;as initiated by the remote BICA system 260, such as periodically or asis otherwise initiated; etc.). In various embodiments, such contact andensuing information transmission may be performed at various times. Forexample, the BICA application may allow the user to schedule thetransmission for a specified time, such as to conserve battery power forthe mobile device 205 by restricting transmissions to time periods inwhich the mobile device is externally powered, or to delay transmittinguntil a particular network connection is available (e.g., in order toutilize a local Wi-Fi connection for such transmission rather than acellular network connection, such as to lessen or remove the impact ofthe transmission on a limited “data plan” of the user), or to delaytransmitting until the mobile device is docked or otherwise can use anon-wireless physical connection.

In certain scenarios and embodiments, portions of the capturedinformation for a building interior may be transmitted at differenttimes for subsequent processing. For example, video recordings capturedat some or all of the viewing locations for a building interior may betransmitted independently of any linking information captured duringmovement of the mobile device between such viewing locations, or viceversa. As another example, one or more portions of captured informationfor a building interior may be transmitted prior to fully completing thecapture of all viewing locations within that building interior, such asto enable the remote BICA system 260 to generate corresponding panoramaimages for such viewing locations concurrently with the capture ofadditional building interior information, to determine relativepositional information for certain viewing locations concurrently withthe capture of additional building interior information, and/or toanalyze the transmitted portions of the captured information todetermine and provide notification of any problems with thosetransmitted portions. In this manner, the BICA system may provide anotification to the user that one or more of the viewing locationsshould be recaptured while the user is still within the buildinginterior, such as if the BICA system determines during processing of thecorresponding video recordings for those viewing locations that suchvideo recordings are of insufficient or undesirable quality to serve asthe basis for generating a panorama image, or do not appear to providecomplete coverage of the building (e.g., if only 1 of 3 expectedbathrooms have been captured, such as based on a floor plan or otherinformation that is available about the building).

In the depicted implementation of FIG. 2, the BICA system 260 includes adata collection manager 262 (for managing the acquisition, receipt andstorage of captured media, sensor data, and other information related tobuilding interiors); a data analysis manager 264 (for managing analysisof received sensor data and other information, including to determinerelative positional information regarding related viewing locations of abuilding interior); a media analysis manager 266 (for managing analysisof received media, including generation of panorama images for viewinglocations based on received video data); Web server 268; GUI 272; and anapplication programming interface (“API”) 270 for programmatic access byremote executing software programs. The BICA system is communicativelycoupled (locally or remotely) to storage facility 280, which includesbuilding information database 282, user information database 284 withvarious user-specific information (e.g., user preferences), and mediainformation database 286. In certain implementations, the storagefacility 280 may be incorporated within or otherwise directly operatedby the BICA system; in other implementations, some or all of thefunctionality provided by the storage facility may be provided by one ormore third-party network-accessible storage service providers (e.g., vianetwork 201 and/or one or more other intervening networks, not shown).

Continuing the example of FIG. 2, processing of the captured informationregarding the building 299 interior is performed in a manner similar tothat described with respect to the processing of captured informationregarding the building 199 interior of FIG. 1. In particular, a panoramaimage is generated for each of viewing locations 210A-210H based on oneor more analyses of the respective video recording corresponding to eachsuch viewing location, with various operations performed on individualframes of each such video recording as part of generating acorresponding panorama image. Analysis of the linking informationcorresponding to each segment of travel path 215 is performed in orderto determine relative positional information between successive viewinglocations 210 along that travel path, including an analysis ofacceleration data (and any additional sensor data) corresponding to eachsuch travel path segment to determine a relative location of viewinglocation 210B with respect to previous viewing location 210A; a relativelocation of viewing location 210C with respect to previous viewinglocation 210B; and so on.

In various scenarios and embodiments, specific aspects of the processingof the captured information may be performed by the remote BICA system260, by a local BICA client application (not shown) executing on mobiledevice 205, or both. For example, the local BICA client application mayanalyze captured sensor data in order to insert one or more markers intocorresponding video information recorded during capture of the buildinginterior, such as to separate the recorded video information intoportions respectively corresponding to the capture of each viewinglocation within the building interior and other portions respectivelycorresponding to the capture of linking information during movementbetween those viewing locations. In this manner, transmission and/oranalysis of the captured information may be performed in an apportionedmanner rather than as a single unit. As another example, the remote BICAsystem 260 may generate a panorama image for each of the viewinglocations within a building interior, while a local BICA clientapplication executing on mobile device 205 may analyze the capturedlinking information in order to determine relative locations for suchviewing locations, or vice versa. It will be appreciated that in variousembodiments, any combination of local and remote processing of thecaptured information regarding a building interior may be performed byone or both of the remote BICA system and local BICA client application,or that instead only one of the remote and local applications may beused.

In the depicted computing environment 200 of FIG. 2, the network(s) 201is one or more publicly accessible linked networks, possibly operated byvarious distinct parties, such as the Internet. In otherimplementations, the network 201 may have other forms. For example, thenetwork 201 may instead be a private network, such as a corporate oruniversity network that is wholly or partially inaccessible tonon-privileged users. In still other implementations, the network 201may include both private and public networks, with one or more of theprivate networks having access to and/or from one or more of the publicnetworks. Furthermore, the network 201 may include various types ofwired and/or wireless networks in various situations. In addition, inthis illustrated example of FIG. 2, users may utilize client computingsystems and/or other client devices (such as mobile device 205) tointeract with the BICA system 260 to obtain various describedfunctionality via the network 201, and in doing so may provide varioustypes of information to the BICA system. Moreover, in certainimplementations, the various users and providers of the networkedenvironment 200 may interact with the BICA system and/or one or moreother users and providers using an optional private or dedicatedconnection.

Again with reference to FIG. 2, once respective panorama images havebeen generated for each of the viewing locations 210A-210H and relativepositional information with respect to those viewing locations has beendetermined, the BICA system 260 generates a presentation of the building299 interior based on the respective panorama images and relativepositional information to create a group of linked panorama images. Inparticular, based on the relative positional information, the BICAsystem associates each panorama image (which corresponds to a single oneof viewing locations 210) with additional information reflecting one ormore links to one or more other of the viewing locations. For example,in the depicted embodiment, the BICA system might associate thegenerated panorama image corresponding to viewing location 210G withlinks respectively associated with each of viewing locations 210C, 210E,210F, and 210H. In certain embodiments, the BICA system may determine toassociate a panorama image with links corresponding to each additionalviewing location within the building interior that satisfy one or moredefined criteria. As non-limiting examples, such criteria forassociating a link may include whether the viewing locationcorresponding to the link is visible at least in part from the viewinglocation that corresponds to the panorama image; whether the viewinglocation corresponding to the link is within a defined proximity to theviewing location that corresponds to the panorama image; whethersufficient information is available to determine the relative positionor direction of the viewing location from the viewing location thatcorresponds to the panorama image; or other suitable criteria. Note thatas described above with respect to the generated panorama imagecorresponding to viewing location 210G, link information may beassociated with a panorama image such that the associated links includelinks corresponding to viewing locations other than those that wereconsecutively captured during the original capture process—for example,during the capture of building 299 interior, viewing location 210G wasimmediately preceded along travel path 215 by viewing location 210E andimmediately followed by viewing location 210H, and yet links may beassociated for the 210G panorama image that correspond to any or all ofviewing locations 210A, 210B, 210C, 210D, and 210F as well.

In certain embodiments, generating a presentation of the building 299interior may include determining an initial panorama image to display asa “starting point” of the presentation. It will be appreciated that theinitial panorama image selected by the BICA system may or may notcorrespond to the first viewing location for the original capture of thebuilding interior (i.e., viewing location 210A for the building 299interior in FIG. 2). For example, the BICA system may determine todesignate an initial panorama image that corresponds to a viewinglocation visible from the most other viewing locations within thebuilding interior; that corresponds to a viewing location within aparticular type of room within the building interior (e.g., a buildinglobby, and entryway, a living room, a kitchen, or other type); thatcorresponds to a viewing location within a room of the building interiorthat appears to encompass a greatest square footage; or that correspondsto a viewing location satisfying other defined criteria.

In addition to the automated generation of the representation of thebuilding 299 interior (including generation of panorama images anddetermination of inter-panorama links based on determined relativeposition information between corresponding viewing locations), thedescribed techniques may in at least some embodiments include enablingthe user carrying the mobile device and/or one or more other users(e.g., operators of the BICA system 260) to modify the generatedrepresentation of the building interior in various manners, such as viaa corresponding GUI provided by the BICA system. Such modification mayinclude, for example, adding, deleting and/or changing determinedinter-panorama links (e.g., to adjust links to pass through doorways orother passages between rooms rather than through walls; to add or removelinks corresponding to end user expectations of related viewinglocations; etc.). In addition, such modification may further includeother changes, such as changing panorama images (e.g., removing apanorama image if its viewing location is not useful or if there areother problems with the panorama image; selecting a new startingimage/direction in a panorama image when it is initially displayed;selecting a new starting panorama image to display for the buildinginterior; etc.), adding or otherwise modifying textual and/or audioannotations or descriptions for particular panoramas images and/orinter-panorama links, etc. In addition, in at least some embodiments,the described techniques may include enabling a user of the mobiledevice to utilize individual component images of a panorama image invarious manners, such as to generate one or more “thumbnail” imagescorresponding to individual component images; to extract and modify anindividual component image (e.g., to crop, to resize, or otherwise editthe image); to share individual component images to one or more socialmedia sites or other forum; to insert in web pages or other publicationsregarding a captured building, such as real estate descriptions; and tootherwise use such a component image as a digital photograph.

Once a presentation for a building interior is generated, the BICAsystem stores the presentation for future use (e.g., in linked panoramabuilding information database 282 or other component of storage 280 asdepicted within FIG. 2), such as to respond to one or more laterrequests to display the presentation for a specified building interiorthat has been previously captured. For example, in response to a requestfrom an end user to display a presentation for building 299 interior,the BICA system 260 may retrieve the relevant presentation informationfrom storage 280 and selectively transmit some or all of suchpresentation information to a client computing system (not shown) of theend user (such as via network 201 and one or more of Web server 268, GUI272 and API 270). In so doing, the BICA system provides information thatcauses the client computing device to display an initial panorama imagecorresponding to a determined first viewing location within the buildinginterior—for example, viewing location 210C may be selected as the firstviewing location for the presentation, with an initial primary componentimage of the panorama image associated with viewing location 210C beingdisplayed to the end user.

In at least some embodiments, the display of the panorama image isperformed in a user-navigable manner, such as to allow the user todetermine a sequence, direction, and/or rate of display of additionalcomponent images of the generated panorama image. For example, incertain embodiments the user may navigate the panorama image by using aninput device (a mouse, touchscreen, virtual-reality display, or otherinput device) to selectively “turn” within the panorama image, such thatthe BICA system causes the client computing system to display one ormore additional component images or other portions of the panorama imagein accordance with the received user input. In addition, thepresentation as a whole is navigable by the user via selection of therespective link information associated with one or more other viewinglocations (and other corresponding panorama images) by the BICA systemwhen generating the presentation information—in this manner, the usermay navigate the entirety of the presentation for a building interiorvia selection of displayed link during display of panorama images, suchas to initiate display by the BICA system of other correspondingpanorama images associated with other viewing locations within thebuilding interior to which the selected links correspond. Additionaldetails related to the determination of inter-panorama links based ondetermined relative position information between corresponding viewinglocations is included in U.S. patent application Ser. No. 15/649,434,entitled “Connecting And Using Building Interior Data Acquired FromMobile Devices” and filed on Jul. 13, 2017, now U.S. Pat. No.10,530,997, which is hereby incorporated by reference in its entirety.

FIG. 3 is a block diagram illustrating an embodiment of a servercomputing system 300 executing an implementation of a BICA system340—the server computing system and BICA system may be implemented usinga plurality of electronic circuits that, when in combined operation, aresuitable for performing and configured to perform at least some of thetechniques described herein. In the illustrated embodiment, the servercomputing system 300 includes one or more hardware central processingunits (“CPU”) or other processors 305, various input/output (“I/O”)components 310, storage 320, and memory 350, with the illustrated I/Ocomponents including a display 311, a network connection 312, acomputer-readable media drive 313, and other I/O devices 315 (e.g.,keyboards, mice or other pointing devices, microphones, speakers, GPSreceivers, etc.). The server computing system 300 and executing BICAsystem 340 may communicate with other computing systems via one or morenetworks 399 (e.g., the Internet, one or more cellular telephonenetworks, etc.), such as BICA user computing systems 360, clientcomputing systems 380, and other computing systems 390.

In the illustrated embodiment, an embodiment of the BICA system 340executes in memory 350 in order to perform at least some of thedescribed techniques, such as by using the processor(s) 305 to executesoftware instructions of the system 340 in a manner that configures theprocessor(s) 305 and computing system 300 to perform automatedoperations that implement those described techniques. The illustratedembodiment of the BICA system includes data collection manager component342 (e.g., in a manner corresponding to data collection manager 262 ofFIG. 2), media collection manager component 344, data analysis managercomponent 346 (e.g., in a manner corresponding to data analysis manager264 of FIG. 2), media analysis manager component 348 (e.g., in a mannercorresponding to media analysis manager 266 of FIG. 2), Web server 345(e.g., in a manner corresponding to Web server 268 of FIG. 2), API 347(e.g., in a manner corresponding to API 270 of FIG. 2), and (optionally)other programs and components 349. As part of such automated operations,the BICA system 340, components thereof, and/or other optional programsor components 349 executing in memory 330 may store and/or retrievevarious types of data, including in the example database data structuresof storage 320. In this example, the data used may include various typesof user information in database (“DB”) 322, various types of buildinginformation in DB 324, various types of media information in DB 326,and/or various types of additional information 328, such as variousanalytical information related to one or more building interiorspreviously captured, analyzed, and/or presented by the BICA system.

Some or all of the user computing systems 360 (e.g., mobile devices),client computing systems 380, and other computing systems 390 maysimilarly include some or all of the types of components illustrated forserver computing system 300. As a non-limiting example, the BICA usercomputing systems 360 include hardware CPU(s) 361, I/O components 362,storage 366, and memory 367. In the depicted embodiment, the BICA usercomputing systems 360 also include an imaging system 364, and both abrowser 368 and BICA client application 369 are executing within memory367.

It will be appreciated that computing system 300 and other systems anddevices included within FIG. 3 are merely illustrative and are notintended to limit the scope of the present invention. The systems and/ordevices may instead each include multiple interacting computing systemsor devices, and may be connected to other devices that are notspecifically illustrated, including via Bluetooth communication or otherdirect communication, through one or more networks such as the Internet,via the Web, or via one or more private networks (e.g., mobilecommunication networks, etc.). More generally, a device or othercomputing system may comprise any combination of hardware that mayinteract and perform the described types of functionality, optionallywhen programmed or otherwise configured with particular softwareinstructions and/or data structures, including without limitationdesktop or other computers (e.g., tablets, slates, etc.), databaseservers, network storage devices and other network devices, smart phonesand other cell phones, consumer electronics, wearable devices, digitalmusic player devices, handheld gaming devices, PDAs, wireless phones,Internet appliances, and various other consumer products that includeappropriate communication capabilities. In addition, the functionalityprovided by the illustrated BICA system 340 may in some embodiments bedistributed in various components other than those specificallyillustrated. Similarly, in some embodiments, some of the functionalityof the BICA system 340 may not be provided and/or other additionalfunctionality may be available. In addition, in certain implementations,various functionality of the BICA system may be provided by third-partypartners of an operator of the BICA system. For example, data collectedby the BICA system may be provided to a third party for analysis and/ormetric generation.

It will also be appreciated that, while various items are illustrated asbeing stored in memory or on storage while being used, these items orportions of them may be transferred between memory and other storagedevices for purposes of memory management and data integrity.Alternatively, in other embodiments some or all of the softwarecomponents and/or systems may execute in memory on another device andcommunicate with the illustrated computing systems via inter-computercommunication. Thus, in some embodiments, some or all of the describedtechniques may be performed by hardware means that include one or moreprocessors and/or memory and/or storage when configured by one or moresoftware programs (e.g., the BICA system 340 and/or BICA client softwareexecuting on user computing systems 360 and/or client computing devices380) and/or data structures, such as by execution of softwareinstructions of the one or more software programs and/or by storage ofsuch software instructions and/or data structures. Furthermore, in someembodiments, some or all of the systems and/or components may beimplemented or provided in other manners, such as by consisting of oneor more means that are implemented at least partially in firmware and/orhardware (e.g., rather than as a means implemented in whole or in partby software instructions that configure a particular CPU or otherprocessor), including, but not limited to, one or moreapplication-specific integrated circuits (ASICs), standard integratedcircuits, controllers (e.g., by executing appropriate instructions, andincluding microcontrollers and/or embedded controllers),field-programmable gate arrays (FPGAs), complex programmable logicdevices (CPLDs), etc. Some or all of the components, systems and datastructures may also be stored (e.g., as software instructions orstructured data) on a non-transitory computer-readable storage mediums,such as a hard disk or flash drive or other non-volatile storage device,volatile or non-volatile memory (e.g., RAM or flash RAM), a networkstorage device, or a portable media article (e.g., a DVD disk, a CDdisk, an optical disk, a flash memory device, etc.) to be read by anappropriate drive or via an appropriate connection. The systems,components and data structures may also in some embodiments betransmitted via generated data signals (e.g., as part of a carrier waveor other analog or digital propagated signal) on a variety ofcomputer-readable transmission mediums, including wireless-based andwired/cable-based mediums, and may take a variety of forms (e.g., aspart of a single or multiplexed analog signal, or as multiple discretedigital packets or frames). Such computer program products may also takeother forms in other embodiments. Accordingly, embodiments of thepresent disclosure may be practiced with other computer systemconfigurations.

FIGS. 4-6 depict exemplary automated operations for acquiring, analyzingand presenting information regarding a building, such as may beperformed in some embodiments in part or in whole by a BICA system(e.g., by the BICA application 155 of FIG. 1, by one or more componentsof the BICA system 260 of networked environment 200 depicted by FIG. 2,and/or the BICA system 340 executed by the server computing system 300of FIG. 3). In particular, FIG. 4 depicts an example overview processflow for a BICA routine; FIG. 5 depicts an example process flow for abuilding interior data acquisition routine; and FIG. 6 depicts anexample process flow for a building interior representation presentationroutine.

FIG. 4 illustrates an example flow diagram for an embodiment of aBuilding Interior Capture and Analysis routine 400. The routine of FIG.4 begins at block 405, in which instructions or information arereceived. At block 410, the routine determines whether the receivedinstructions or information indicate to acquire data representing abuilding interior. If so, the routine proceeds to block 415 in order toperform a building interior data acquisition subroutine (with oneexample of such a routine illustrated in FIG. 5, as discussed furtherbelow) in order to acquire data representing the interior of a targetbuilding of interest. If it was determined at block 410 that thereceived instructions or information did not indicate to acquire datarepresenting a building interior, the routine proceeds to block 420 todetermine whether the received instructions or information includedacquired building interior data, such as a transmission of previouslycaptured building interior data from a remote mobile device (e.g., amobile device executing a local instance of a BICA application), withthe transmission of acquired building interior data from mobile device205 to BICA system 260 via network(s) 201 of FIG. 2 illustrating oneexample of such data acquisition. Following block 415, or after adetermination is made in block 420 that the received instructions orinformation include acquired building interior data, the routineproceeds to block 417 in order to store the acquired data.

After block 417, the routine proceeds to block 425, in which (whethervia local processing, remote processing, or some combination thereof) apanorama image is generated for each viewing location of the capturedbuilding interior based on a corresponding recorded video for theviewing location, and then to block 430, in which (whether via localprocessing, remote processing, or some combination thereof) relativepositional information between viewing locations of the buildinginterior is determined based on the linking information captured duringmovement of the mobile device between those viewing locations.

It will be appreciated that, despite the categorical method ofprocessing depicted in FIG. 4 in which all panorama images are generatedbased on analysis of recorded viewing location information prior todetermining relative positional information for viewing locations, anyorder for such processing may be implemented in accordance with thetechniques described herein. For example, the routine may insteadprocess individual segments of captured information sequentially, suchthat a panorama image is generated for a first viewing location,followed by processing of linking information captured during movementaway from that first viewing location to determine relative positionalinformation for a second viewing location; a panorama image generatedfor the second viewing location, followed by processing of linkinginformation captured during movement away from that second viewinglocation to determine relative positional information for a thirdviewing location; etc. In various embodiments, processing of capturedinformation for one or many building interiors may be performed in aparallel and/or distributed manner, such as by utilizing one or moreparallel processing computing clusters (e.g., directly by the BICAsystem or via one or more third-party cloud computing services).

At block 435, the routine creates and stores a representation of thecaptured building interior based on the panorama images generated inblock 425 that are linked using the relative positional information forthe multiple viewing locations determined in block 430. In particular,and as described elsewhere herein, each panorama image (corresponding toone viewing location within the building interior) is associated withinformation reflecting one or more user-selectable links to one or moreother of the viewing locations, such that selection of a user-selectablelink while viewing a panorama image associated with one viewing locationinitiates display of a distinct other panorama image associated withanother viewing location.

If it was determined in block 420 that the instructions or informationreceived in block 405 did not indicate to receive acquired buildinginterior data, the routine proceeds to block 485, in which it determineswhether the received instructions or information include an indicationto present a previously stored representation of a building interior. Ifso, the routine proceeds to block 440 to perform a building interiorrepresentation presentation subroutine, to cause a display or otherpresentation of a created representation of a target building interior(such as via a client computing system of an end user, and with oneexample of such a routine illustrated in FIG. 6, as discussed furtherbelow).

If it was determined in block 485 that the instructions or informationreceived in block 405 did not include an indication to present apreviously stored representation of a building interior, control passesto block 490 to perform any other indicated operations as appropriate,such as any housekeeping tasks, to obtain and store information aboutusers of the system, to configure parameters to be used in variousoperations of the system, etc.

Following blocks 435, 440, or 490, the routine proceeds to block 495 todetermine whether to continue, such as until an explicit indication toterminate. If it is determined to continue, control returns to block 405to await additional instructions or information, and if not proceeds tostep 499 and ends.

FIG. 5 illustrates an example flow diagram for an embodiment of aBuilding Interior Data Acquisition routine 500. The routine may beinitiated in various manners in various embodiments, such as from block415 of FIG. 4, or instead in some embodiments by a user interactingdirectly with a mobile device to initiate video recording inside abuilding interior (e.g., by a local BICA application on the mobiledevice; if the video recording of the building interior is performed asone or more videos without the use of a local BICA application, and withcorresponding IMU linking data later retrieved from the mobile device;etc.).

The illustrated embodiment of the routine begins at block 510, in whichthe routine initiates recording video and/or sensor data at a firstviewing location within the building interior as a mobile device withimaging capabilities is rotated around a vertical axis located at thefirst viewing location. In addition, the routine may in some embodimentsoptionally monitor the motion of the mobile device during the recordingat the first viewing location, and provide one or more guidance cues tothe user regarding the motion of the mobile device, quality of the videobeing recorded, associated lighting/environmental conditions, etc.

At block 515, the routine determines that video recording of the viewinglocation is completed. As discussed elsewhere herein, such determinationmay be based on an explicit indication from a user of the mobile device,or may be automatically determined based on one or more of an analysisof sensor data, the video being recorded, the user remainingsubstantially motionless for a defined period of time, etc.

At block 520, the routine optionally obtains annotation and/or otherinformation from the user regarding the captured viewing location. Forexample, in certain embodiments the BICA system may record audible ortextual annotations from the user to further describe the viewinglocation (e.g., to provide a label or other description of the viewinglocation, to describe aspects of the viewing location that the recordedvideo or sensor data may not adequately capture, etc.), such as forlater use in presentation of information about that viewing location.

After blocks 515 and 520, the routine proceeds to block 525 to initiatethe capture of linking information (including acceleration data) duringmovement of the mobile device along a travel path away from the currentviewing location and towards a next viewing location within the buildinginterior. As described elsewhere herein, the captured linkinginformation may include additional sensor data as well as additionalvideo information recorded during such movement. Initiating the captureof such linking information may be performed in response to an explicitindication from a user of the mobile device or based on one or moreautomated analyses of information recorded from the mobile device. Inaddition, and in a manner similar to that noted with respect tocapturing the first viewing location in block 510, the routine mayfurther optionally monitor the motion of the mobile device in someembodiments during movement to the next viewing location, and provideone or more guidance cues to the user regarding the motion of the mobiledevice, quality of the sensor data and/or video information beingcaptured, associated lighting/environmental conditions, advisability ofcapturing a next viewing location, and any other suitable aspects ofcapturing the linking information. Similarly, the routine may optionallyobtain annotation and/or other information from the user regarding thetravel path, such as for later use in presentation of informationregarding that travel path or a resulting inter-panorama connectionlink.

At block 530, the routine determines that the mobile device has arrivedat a next viewing location after the user travel path segment to whichthe linking data corresponds, for use as a new current viewing location.As described in greater detail elsewhere herein, such determination maybe based on one or more of an explicit user request, an analysis ofincoming sensor data, recorded video information, the user remainingsubstantially motionless for a defined period of time, etc. In responseto the determination, the routine proceeds to block 535 to initiatecapture of the current viewing location in a manner similar to thatdescribed for blocks 510-520 with respect to the first viewing location.In particular, the routine initiates recording of video and/or sensordata at the current viewing location within the building interior as themobile device is rotated around a vertical axis located at the currentviewing location, optionally monitoring the recording to provide one ormore guidance cues to the user regarding the capture process.

At block 540, in a manner similar to that noted with respect to block515 for the first viewing location, the routine determines thatrecording of the current viewing location is completed, such as based onan explicit indication from a user, and/or one or more analyses ofinformation from the mobile device. At block 545, the routine optionallyobtains annotation and/or other information from the user regarding thecaptured viewing location and/or the travel path from the previousviewing location, such as audible or textual annotations from the userto further describe the viewing location or travel path, such as forlater use in presentation of information regarding that viewing locationand/or use of that travel path.

The routine proceeds to block 555 to determine whether all viewinglocations within the building interior that have been selected by theuser have been captured, such as based on an express request by a userof the mobile device to terminate the capturing process or,alternatively, a determination that the capturing process is to continue(such as via analysis of acceleration or other sensor data indicatingthat the mobile device is moving to a subsequent viewing location). Ifit is determined that the capturing process is to continue—i.e., thatnot all viewing locations for the building interior have yet beencaptured by the mobile device—the routine returns to block 525 in orderto capture linking information during movement of the mobile device tothe next viewing location in sequence within the building interior.Otherwise, the routine proceeds to block 560 to optionally analyzeviewing location information, such as in order to identify possibleadditional coverage (and/or other information) to acquire within thebuilding interior. For example, the BICA system may provide one or morenotifications to the user regarding the information acquired duringcapture of the multiple viewing locations and corresponding linkinginformation, such as if it determines that one or more segments of therecorded information are of insufficient or undesirable quality to serveas the basis for generating a panorama image, or do not appear toprovide complete coverage of the building, or would provide informationfor additional inter-panorama links.

After block 560, the routine proceeds to block 590 to store the acquireddata and/or to transmit the acquired data from the mobile device to aremote BICA system (such as for analysis and/or storage by the remoteBICA system for future use). The routine then proceeds to block 599 andends. In situations in which the routine 500 is invoked from block 415of FIG. 4, the routine will then return to block 417 of FIG. 4,including to provide the acquired building interior data to that routine400.

FIG. 6 illustrates an example flow diagram for an embodiment of aBuilding Interior Representation Presentation routine 600. The routinemay be initiated in various manners in various embodiments, such as fromblock 440 of FIG. 4, or instead in some embodiments by an end userinteracting with his or her client device to obtain (e.g., retrieve froma remote location over one or more networks and/or from local storage)information about one or more linked panorama images representing abuilding interior. While the illustrated embodiment includes the linkedpanorama images representing or covering a single house, building orother structure, in other embodiments the linked panoramas may extendbeyond a single such structure, as discussed in greater detail elsewhereherein.

The example embodiment of the routine begins at block 605, in which auser request is received for displaying of presentation informationregarding a specified building interior that has been previouslycaptured.

In response to the user request, the routine proceeds to block 610 toretrieve stored presentation information regarding the specifiedbuilding interior. Once the presentation information is retrieved, theroutine proceeds to block 615, and causes a client computing systemassociated with the user request to display an initial panorama imagecorresponding to a determined first viewing location within thespecified building interior, as well as to display indications of one ormore visual inter-panorama links to corresponding additional viewinglocations, such as by transmitting information to the client computingsystem that includes at least the initial panorama image and itsinter-panorama links (and optionally corresponding information for someor all other panorama images for the building). As described elsewhereherein, the initial panorama image may or may not correspond to theviewing location first captured within the specified building interior.In addition, it will be appreciated that an end user may use variouslocal controls to manipulate the initial panorama image in variousmanners, such as to move horizontally and/or vertically within thepanorama image to display different views (e.g., different directionswithin the building from the viewing location to which the initialpanorama image corresponds), to zoom in or out, to apply various filtersand/or otherwise adjust the quality or type of information displayed(e.g., if the initial panorama image is constructed from one or morerotations at the viewing location that use different settings orotherwise acquire different types of data, such as one rotation thatcaptures visible light, another rotation that captures infraredlight/energy, another rotation that captures ultraviolet light/energy,etc.).

At block 620, after the end user is done with the initial panoramaimage, the routine determines whether the end user has selected one ofthe provided links associated with the displayed panorama image, or hasinstead indicated that the end user is done (e.g., closed the currentpanorama image and/or its local viewing application on the clientsystem). If the end user is done, the routine continues to block 699 andends. Otherwise, responsive to the end user selection of one of thedisplayed links, at block 625 the routine causes the associated clientcomputing system to display a distinct additional panorama image (orother information) corresponding to the selected link in a mannersimilar to that described with respect to block 615, as well as todisplay indications of one or more additional links to correspondingadditional viewing locations as appropriate for the additional panoramaimage—as part of doing so, the server system providing the buildingrepresentation information may optionally transmit additionalcorresponding information to the client computing system at that time ina dynamic manner for display, or the client computing system may insteadoptionally retrieve information that was previously sent with respect toblock 715 and use that. After block 625, the routine returns to block620 to await an indication of another user selection of one of theuser-selectable links provided as part of the presentation, or tootherwise indicate that the end user is done. In situations in which theroutine 600 is invoked from block 440 of FIG. 4, the routine will thenreturn to block 495 of FIG. 4 when it reaches block 699.

Aspects of the present disclosure are described herein with reference toflowchart illustrations and/or block diagrams of methods, apparatus(systems), and computer program products according to embodiments of thepresent disclosure. It will be appreciated that each block of theflowchart illustrations and/or block diagrams, and combinations ofblocks in the flowchart illustrations and/or block diagrams, can beimplemented by computer readable program instructions. It will befurther appreciated that in some implementations the functionalityprovided by the routines discussed above may be provided in alternativeways, such as being split among more routines or consolidated into fewerroutines. Similarly, in some implementations illustrated routines mayprovide more or less functionality than is described, such as when otherillustrated routines instead lack or include such functionalityrespectively, or when the amount of functionality that is provided isaltered. In addition, while various operations may be illustrated asbeing performed in a particular manner (e.g., in serial or in parallel,or synchronous or asynchronous) and/or in a particular order, in otherimplementations the operations may be performed in other orders and inother manners. Any data structures discussed above may also bestructured in different manners, such as by having a single datastructure split into multiple data structures or by having multiple datastructures consolidated into a single data structure. Similarly, in someimplementations illustrated data structures may store more or lessinformation than is described, such as when other illustrated datastructures instead lack or include such information respectively, orwhen the amount or types of information that is stored is altered.

From the foregoing it will be appreciated that, although specificembodiments have been described herein for purposes of illustration,various modifications may be made without deviating from the spirit andscope of the invention. Accordingly, the invention is not limited exceptas by corresponding claims and the elements recited by those claims. Inaddition, while certain aspects of the invention may be presented incertain claim forms at certain times, the inventors contemplate thevarious aspects of the invention in any available claim form. Forexample, while only some aspects of the invention may be recited asbeing embodied in a computer-readable medium at particular times, otheraspects may likewise be so embodied.

What is claimed is:
 1. A computer-implemented method comprising:recording data with one or more mobile devices for a sequence of aplurality of viewing locations within an interior of a building,including recording visual data of the interior from each of the viewinglocations, and including capturing linking information about movement ofthe one or more mobile devices along a travel path as the one or moremobile devices move between successive viewing locations in thesequence; creating, by one or more computing devices from the recordedvisual data for the viewing locations, and for each of the viewinglocations, a panorama image for that viewing location with views fromthat viewing location for each of multiple directions; determining, bythe one or more computing devices, directions between at least someviewing locations of the plurality, including analyzing the capturedlinking information about the movement along the travel path to identifydirections between pairs of successive viewing locations in thesequence; generating, by the one or more computing devices, relativepositional information between the at least some viewing locations basedat least in part on the determined directions; and providing, by the oneor more computing devices, information for display about the interior ofthe building that includes the created panorama image for a firstviewing location of the viewing locations and that includes one or morevisual indicators overlaid on a display of that created panorama imagefor one or more directions from the first viewing location to one ormore other second viewing locations of the viewing locations, to enablechanging to a display of the panorama image for one of the other secondviewing locations upon selection of a respective one of the overlaid oneor more visual indicators that is in the direction of the one othersecond viewing location.
 2. The computer-implemented method of claim 1wherein the capturing of the linking information as the one or moremobile devices move between successive viewing locations in the sequenceincludes recording visual data along the travel path, and wherein thedetermining of the directions between the at least some viewinglocations includes analyzing the recorded visual data.
 3. Thecomputer-implemented method of claim 2 wherein the recording of thevisual data along the travel path as the one or more mobile devices movebetween the successive viewing locations in the sequence includesmonitoring motion of the one or more mobile devices, and providing oneor more guidance cues to an associated user based on the monitoring. 4.The computer-implemented method of claim 1 wherein the capturing of thelinking information as the one or more mobile devices move betweensuccessive viewing locations in the sequence includes recordinginformation about lighting conditions as the one or more mobile devicesmove along a travel path between the successive viewing locations in thesequence, and wherein the providing of the information includesproviding the recorded information about the lighting conditions.
 5. Thecomputer-implemented method of claim 1 wherein the capturing of thelinking information as the one or more mobile devices move betweensuccessive viewing locations in the sequence includes recordinginformation about environmental conditions as the one or more mobiledevices move along a travel path between the successive viewinglocations in the sequence, and wherein the providing of the informationincludes providing the recorded information about the environmentalconditions.
 6. The computer-implemented method of claim 1 wherein thecapturing of the linking information as the one or more mobile devicesmove between successive viewing locations in the sequence includesrecording descriptive information from an associated user as the one ormore mobile devices move along a travel path between the successiveviewing locations in the sequence, and wherein the providing of theinformation includes providing the recorded descriptive information. 7.The computer-implemented method of claim 1 wherein the providing of theinformation includes receiving, after display on a client device of thecreated panorama image for the first viewing location with auser-selectable visual representation of a link to another of thecreated panorama images for the one other second viewing location, anindication of a selection by a user of the client device of theuser-selectable visual representation, and causing, based at least inpart on the selection, the client device to display the another createdpanorama image.
 8. A non-transitory computer-readable medium with storedcontents that cause one or more computing devices to perform automatedoperations including at least: recording, using one or more mobiledevices, data for a sequence of viewing locations associated withmultiple buildings, including recording visual data from each of theviewing locations and recording additional data other than visible lightfrom an environment at each of the viewing locations, and includingcapturing linking information about movement of the one or more mobiledevices along a travel path as the one or more mobile devices movebetween successive viewing locations in the sequence, wherein one of theone or more mobile devices is a self-powered mobile device that movesitself between successive viewing locations in the sequence, wherein atleast some of the linking information is captured by the self-poweredmobile device as it moves itself between successive viewing locations inthe sequence, and wherein at least one of the successive viewinglocations in the sequence is selected based on providing to anassociated user a notification regarding use of the at least one viewinglocation after an automated determination to provide the notification;creating, by the one or more computing devices and for each of theviewing locations, a panorama image for the viewing location from therecorded visual data for the viewing location and a representation ofthe viewing location using the recorded additional data for the viewinglocation; generating, by the one or more computing devices and based atleast in part on the captured linking information, relative positionalinformation between at least some of the viewing locations; andpresenting, by the one or more computing devices, information about atleast one of the multiple buildings that includes at least some of thecreated panorama images and that indicates at least some of thegenerated relative positional information for the at least some viewinglocations and that includes at least one of the created representationsusing recorded additional data.
 9. The non-transitory computer-readablemedium of claim 8 wherein the stored contents include softwareinstructions that, when executed, cause the one or more computingdevices to perform the automated operations, and wherein the presentingof the information includes receiving, after display on a client deviceof the created panorama image for one of the viewing locations thatincludes a user-selectable visual representation of a link to thecreated panorama image of another of the viewing locations, anindication of a selection by a user of the client device of theuser-selectable visual representation, and causing, based at least inpart on the selection, the client device to display the created panoramaimage of the another viewing location and to present the createdrepresentation for the another viewing location.
 10. Acomputer-implemented method comprising: recording data with a mobiledevice for a sequence of a plurality of recording locations associatedwith a building, including recording, at each of the recordinglocations, at least one type of data other than visible light from anenvironment at that recording location, and capturing linkinginformation associated with movement between successive recordinglocations in the sequence; creating, by one or more computing devices,and for each of the recording locations, a representation for thatrecording location using the data recorded at the recording location;determining, by the one or more computing devices, directions between atleast some pairs of at least some recording locations of the plurality,including analyzing the captured linking information associated with themovement to identify directions between pairs of successive recordinglocations in the sequence; generating, by the one or more computingdevices, relative positional information between the at least somerecording locations based at least in part on the determined directions;and providing, by the one or more computing devices, information forpresentation about the building that includes the created representationfor a first recording location of the recording locations and thatincludes one or more overlaid indicators for one or more directions fromthe first recording location to one or more other second recordinglocations of the recording locations, to enable changing to apresentation of the representation for one of the other second recordinglocations upon selection of a respective one of the one or more overlaidindicators that is in the direction of the one other second recordinglocation.
 11. The computer-implemented method of claim 10 wherein therecording of the at least one type of data other than visual light ateach of the at least some recording locations includes recording audiodata from that recording location and recording visual data from thatrecording location, and wherein the providing of the information aboutthe building includes presenting, by the one or more computing devicesand on a client device of an end user, the created representation forthe first recording location by displaying the visual data from thefirst recording location and by playing the audio data from the firstrecording location.
 12. The computer-implemented method of claim 11wherein the recording of the at least one type of data other than visuallight at each of the at least some recording locations includesrecording, using one or more microphones at that recording location,data from a surrounding environment for that recording location.
 13. Thecomputer-implemented method of claim 11 wherein the recording of the atleast one type of data other than visual light at each of the at leastsome recording locations includes recording, from a user associated withthe mobile device, a verbal description of one or more aspects of thatrecording location.
 14. The computer-implemented method of claim 10wherein the recording of the at least one type of data other than visuallight at each of the at least some recording locations includesrecording at least one of infrared data or ultraviolet data.
 15. Thecomputer-implemented method of claim 10 wherein the recording of the atleast one type of data other than visual light at each of the at leastsome recording locations includes recording at least one of radiationlevels or electromagnetic field levels.
 16. The computer-implementedmethod of claim 10 wherein the recording of the at least one type ofdata other than visual light at each of the at least some recordinglocations includes recording information about lighting conditions atthat recording location.
 17. The computer-implemented method of claim 10wherein the recording of the at least one type of data other than visuallight at each of the at least some recording locations includesrecording data from an altimeter sensor at that recording location. 18.The computer-implemented method of claim 10 wherein the providing of theinformation includes receiving, after presentation on a client device ofthe created representation for the first recording location with auser-selectable link to another of the created representations for theone other second recording location, an indication of a selection by auser of the client device of the user-selectable link, and causing,based at least in part on the selection, the client device to presentthe another created representation.
 19. A system comprising: one or morehardware processors of one or more computing devices; and one or morememories with stored instructions that, when executed by at least one ofthe one or more hardware processors, cause the one or more computingdevices to create and present information representing a building,including: obtaining data recorded with a mobile device for a sequenceof a plurality of recording locations associated with a building,wherein the obtained data includes, for each of the recording locations,at least one type of data other than visible light that is recorded froman environment at that recording location, and further includes linkinginformation that is captured during movement between successiverecording locations in the sequence; creating, for each of the recordinglocations, a representation of that recording location using the datarecorded from the environment at the recording location; determiningdirections between at least some recording locations of the plurality,including analyzing the captured linking information from the movementto identify directions between pairs of successive recording locationsin the sequence; generating relative positional information between theat least some recording locations based at least in part on thedetermined directions; and providing information for presentation aboutthe building that includes the created representation for a firstrecording location of the recording locations and that includes one ormore overlaid indicators for one or more directions from the firstrecording location to one or more other second recording locations ofthe recording locations, to enable changing to a presentation of therepresentation for one of the other second recording locations uponselection of a respective one of the one or more overlaid indicatorsthat is in the direction of the one other second recording location. 20.The system of claim 19 wherein the obtaining of the data includesrecording the at least one type of data at each of the recordinglocations using one or more mobile devices, and wherein the providing ofthe information includes receiving, after presentation on a clientdevice of the created representation for the first recording locationwith a user-selectable link to another of the created representationsfor the one other second recording location, an indication of aselection by a user of the client device of the user-selectable link,and causing, based at least in part on the selection, the client deviceto present the another created representation.
 21. Acomputer-implemented method comprising: recording data for a sequence ofa plurality of viewing locations within an interior of a building,wherein the recording is performed at least in part by a self-poweredmobile device that moves itself between successive viewing locations inthe sequence, and wherein the recording includes recording visual dataof the interior from each of the viewing locations and includescapturing linking information as the self-powered device moves itselfbetween the successive viewing locations in the sequence; creating, byone or more computing devices from the recorded visual data for theviewing locations, and for each of the viewing locations, a panoramaimage for that viewing location with views from that viewing locationfor each of multiple directions; determining, by the one or morecomputing devices, directions between at least some viewing locations ofthe plurality, including analyzing the linking information captured asthe self-powered device moves itself between the successive viewinglocations to identify directions between pairs of successive viewinglocations in the sequence; generating, by the one or more computingdevices, relative positional information between the at least someviewing locations based at least in part on the determined directions;and providing, by the one or more computing devices, information fordisplay about the interior of the building that includes the createdpanorama image for a first viewing location of the viewing locations andthat includes one or more visual indicators overlaid on a display ofthat created panorama image for one or more directions from the firstviewing location to one or more other second viewing locations of theviewing locations, to enable changing to a display of the panorama imagefor one of the other second viewing locations upon selection of arespective one of the overlaid one or more visual indicators that is inthe direction of the one other second viewing location.
 22. Thecomputer-implemented method of claim 21 wherein the self-powered deviceis an aerial drone device, and wherein the self-powered mobile devicemoving itself between the successive viewing locations in the sequenceincluding flying between the successive viewing locations in thesequence.
 23. The computer-implemented method of claim 21 wherein theself-powered device is at least one of a ground-based drone or robotdevice, and wherein the self-powered mobile device moving itself betweenthe successive viewing locations in the sequence including moving alonga floor or other ground surface between the successive viewing locationsin the sequence.
 24. The computer-implemented method of claim 21 whereinthe self-powered device operates under remote control of a user oroperates semi-autonomously or operates fully autonomously, and whereinthe self-powered mobile device moving itself between the successiveviewing locations in the sequence is performed in response toinstructions from the remote control or from semi-autonomous operationor from fully autonomous operation.
 25. A computer-implemented methodcomprising: recording data with one or more mobile devices for asequence of a plurality of viewing locations within an interior of abuilding, including: automatically determining, for each of one or moreof the viewing locations, to provide a notification regarding use of theviewing location for the sequence, and providing, to a user associatedwith the one or more mobile devices and in response to the determining,the notification for the viewing location on at least one of the one ormore mobile devices; recording visual data of the interior from each ofthe viewing locations; and capturing linking information as the one ormore mobile devices move between successive viewing locations in thesequence; creating, by one or more computing devices and from therecorded visual data for the viewing locations, panorama images thatinclude a panorama image for each viewing location with views from theviewing location for each of multiple directions; determining, by theone or more computing devices, directions between at least some viewinglocations of the plurality, including analyzing the linking informationcaptured as the one or more mobile devices move between the successiveviewing locations to identify directions between pairs of successiveviewing locations in the sequence; generating, by the one or morecomputing devices, relative positional information between the at leastsome of the viewing locations based at least in part on the determineddirections; and providing, by the one or more computing devices,information for display about the interior of the building that includesthe created panorama images and that indicates at least some of thegenerated relative positional information for the at least some viewinglocations.
 26. The computer-implemented method of claim 25 wherein theproviding of the notification for a viewing location to the user on theat least one mobile device includes identifying the viewing location tothe user based at least in part on a distance that the user has movedsince a last viewing location.
 27. The computer-implemented method ofclaim 25 wherein the providing of the notification for a viewinglocation to the user on the at least one mobile device includesnotifying the user of the viewing location based at least in part on oneor more directions that the user has moved since a last viewinglocation.
 28. The computer-implemented method of claim 25 wherein theautomatic determining to provide a notification regarding use of aviewing location includes determining advisability of using the viewinglocation for the sequence, and wherein the providing of the notificationfor a viewing location to the user on the at least one mobile deviceincludes notifying the user of the determined advisability for theviewing location.
 29. A computer-implemented method comprising:recording data with one or more mobile devices for a sequence of viewinglocations within an interior of a building, including: automaticallydetermining, for each of one or more of the viewing locations, toprovide a notification regarding use of the viewing location for thesequence, and providing, to a user associated with the one or moremobile devices and in response to the determining, the notification forthe viewing location on at least one of the one or more mobile devices;recording visual data of the interior from each of the viewinglocations; and capturing linking information as the one or more mobiledevices move between successive viewing locations in the sequence;creating, by one or more computing devices and from the recorded visualdata for the viewing locations, panorama images that include a panoramaimage for each viewing location with views from the viewing location foreach of multiple directions; generating, by the one or more computingdevices and based at least in part on the captured linking information,relative positional information between at least some of the viewinglocations; and providing, by the one or more computing devices,information for display about the interior of the building that includesthe created panorama images and that indicates at least some of thegenerated relative positional information for the at least some viewinglocations, and wherein the recording, for one of the viewing locationsof the sequence, of the visual data of the interior for the one viewinglocation includes automatically determining, by the one or more mobiledevices, that the one or more mobile devices have reached the oneviewing location, and in response to the automatic determining that theone or more mobile devices have reached the one viewing location,automatically initiating the recording of the visual data for the oneviewing location.
 30. A computer-implemented method comprising:recording data with one or more devices for a plurality of viewinglocations associated with multiple buildings, including recording visualdata from each of the viewing locations, and including capturing linkinginformation associated with movement between at least some of theplurality of viewing locations; creating, by one or more computingdevices from the recorded visual data for the viewing locations, and foreach of the viewing locations, a panorama image for that viewinglocation with views from that viewing location for each of multipledirections; determining, by the one or more computing devices,directions between at least some viewing locations of the plurality,including analyzing the captured linking information associated with themovement to identify directions between pairs of viewing locations inthe sequence; generating, by the one or more computing devices, relativepositional information between the at least some viewing locations basedat least in part on the determined directions; and providing, by the oneor more computing devices, information for display about at least someof the multiple buildings that includes the created panorama image for afirst viewing location of the viewing locations and that includes one ormore visual indicators overlaid on a display of that created panoramaimage for one or more directions from the first viewing location to oneor more other second viewing locations of the viewing locations, toenable changing to a display of the panorama image for one of the othersecond viewing locations upon selection of a respective one of theoverlaid one or more visual indicators that is in the direction of theone other second viewing location.
 31. The computer-implemented methodof claim 30 wherein the multiple buildings are co-located on a property,wherein the recording of the visual data from each of the viewinglocations includes recording visual data of an interior of at least oneof the multiple buildings, and wherein the providing of the informationincludes providing information about the multiple buildings together ina linked manner.
 32. The computer-implemented method of claim 30 whereinthe multiple buildings are part of one or more city blocks, and whereinthe providing of the information includes providing information about atleast one city block of the one or more city blocks.
 33. Thecomputer-implemented method of claim 30 wherein the multiple buildingsare located along one or more streets and/or roads, and wherein theproviding of the information includes providing information about atleast one street and/or road of the one or more streets and/or roads.